BOS Knowledge Hub
Practical knowledge from the BOS team — covering on-site machining techniques, machine selection guides, and real-world bore repair case studies from across India's industrial sectors.
Delhi NCR runs the largest concentration of active construction equipment in India — metro Phase 4, RRTS, Jewar Airport, expressways. When a machine goes down, there is no time for the workshop route. BOS delivers same-day on-site bore repair across Delhi, Noida, Gurugram, Ghaziabad and Faridabad.
The fifth function of BOS DS50 and DS60 explained — what on-site flange facing is, when you need it alongside bore repair, and how swing bearing mounting faces, hydraulic end caps, and crane slewing rings are faced in the field.
Which machine for which buyer — specific ROI calculations, payback periods, and machine recommendations for workshop owners (2.6-month payback), fleet operators (16-month break-even), and mining contractors (1-repair ROI).
No dry dock required for many repairs. BOS DS60 machines rudder pintles, stern tubes, gudgeon bores, and port crane pivots on-site across India's major ports — afloat, at the berth — with H7 bearing seat tolerances and full classification society documentation.
When to hone, when to bore and weld, the Ra 0.4–1.6 µm surface finish requirement most operators miss, and on-site boring options for large excavator and industrial hydraulic cylinders across India.
Professional on-site bore welding and line boring delivered to your site — excavators, mining machines, cranes, and marine vessels — across India. 40–60% cost saving vs the workshop route.
Line boring explained from first principles — what it is, how the 6-step process works, what tolerances it achieves, when you need it, and how it differs from workshop repair. 30 years of field knowledge, explained plainly.
Every cost factor, every price range, and the calculation most operators get wrong. On-site service Rs. 8K–25K per bore vs the workshop route's true cost of Rs. 2.15L–4.9L. The complete 2026 breakdown.
Both the BOS-DS50 and BOS-DS60 deliver precision on-site bore repair — but they're built for different scales of operation. Here's how to match machine to job.
Read More →Identify the wear, assess the damage, and complete the repair in a single working day — without moving the excavator or sending it to a workshop. A complete step-by-step field guide.
Everything you need to know before buying a portable line boring machine in India — bore range, motor power, welding modes, price comparison, and which machine matches your operation.
BOS DS60 repairs worn eccentric shaft bores, toggle bores, and pitman bores on jaw, cone, and impact crushers on-site across India's quarrying belts. No dismantling. 10–16 hour same-day repair.
BOS DS60 sector welding restores worn crane boom pin bores on-site across India — no dismantling, no transport. Covers mobile, crawler, tower, and port cranes. Same-day return to service.
BOS DS60 deploys to Sundargarh, Keonjhar, Jharsuguda, Angul, and Rourkela for on-site bore repair of iron ore and coal mining excavators, rope shovels, and steel plant equipment. Same-day return to production.
BOS DS60 deploys to Dhanbad, Bokaro, Jamshedpur, and Ranchi for on-site bore repair of coal and iron ore mining excavators. No workshop transport. Same-day return to production.
More articles coming soon — check back for new guides, case studies, and field reports.
